All assignees
800 prefixes in 281 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 281-900 | HOUSTON | 6506 | 2007-09-04 | Yes |
| 281-901 | HSTNSUBURB | 7239 | — | Yes |
| 281-902 | HSTNSUBURB | 7074 | — | Yes |
| 281-903 | SUGAR LAND | 7670 | — | Yes |
| 281-904 | HOUSTON | 6506 | 2007-01-25 | Yes |
| 281-905 | HOUSTON | 6701 | 2006-04-11 | Yes |
| 281-906 | HOUSTON | 6506 | 2014-02-17 | Yes |
| 281-907 | SPRING | 9533 | — | Yes |
| 281-908 | HOUSTON | 6534 | 2011-07-29 | Yes |
| 281-909 | SEABROOK | 9533 | — | Yes |
| 281-910 | DICKINSON | 6506 | — | — |
| 281-911 | XXXXXXXXXX | MULT | — | — |
| 281-912 | HSTNSUBURB | 7670 | 2006-01-05 | Yes |
| 281-913 | HUMBLE | 2114 | — | Yes |
| 281-914 | HOUSTON | 6114 | — | Yes |
| 281-915 | ARCOLA | 6114 | — | Yes |
| 281-916 | KEMAH | 6114 | 2006-01-05 | Yes |
| 281-917 | BAYTOWN | 6506 | 2007-04-02 | Yes |
| 281-918 | BEACH CITY | 318J | 2007-04-10 | Yes |
| 281-919 | BAMMEL | 9533 | — | Yes |
| 281-920 | HSTNSUBURB | 9533 | — | Yes |
| 281-921 | HSTNSUBURB | 7074 | — | — |
| 281-922 | HSTNSUBURB | 9533 | — | Yes |
| 281-923 | LANGHAMCRK | 6506 | — | — |
| 281-924 | HSTNSUBURB | 5562 | — | Yes |
| 281-925 | HSTNSUBURB | 7138 | — | Yes |
| 281-926 | BAMMEL | 9533 | — | — |
| 281-927 | BAMMEL | 9533 | — | — |
| 281-928 | HOUSTON | 6534 | 2011-07-29 | Yes |
| 281-929 | HSTNSUBURB | 9533 | — | Yes |
| 281-930 | DEER PARK | 9533 | — | Yes |
| 281-931 | HSTNSUBURB | 9533 | — | — |
| 281-932 | HOUSTON | 5562 | — | Yes |
| 281-933 | HSTNSUBURB | 9533 | — | — |
| 281-934 | BROOKSHIRE | 2109 | — | Yes |
| 281-935 | HSTNSUBURB | 6701 | — | — |
| 281-936 | HOUSTON | 9533 | 2001-10-22 | Yes |
| 281-937 | SMITHERSLK | 9533 | — | Yes |
| 281-938 | APOLLO | 903C | — | — |
| 281-939 | SPRING | 9533 | 2017-10-17 | Yes |
| 281-940 | HSTNSUBURB | 903C | — | Yes |
| 281-941 | LA PORTE | 7074 | — | Yes |
| 281-942 | SEABROOK | 318J | — | Yes |
| 281-943 | BAMMEL | 7074 | — | Yes |
| 281-944 | BARKER | 7074 | — | Yes |
| 281-945 | BARKER | 903C | 2003-06-16 | Yes |
| 281-946 | DEER PARK | 829J | — | Yes |
| 281-947 | FRIENDSWD | 829J | — | Yes |
| 281-948 | BAMMEL | 6701 | — | — |
| 281-949 | SATSUMA | 7239 | — | Yes |
| 281-950 | — | — | ||
| 281-951 | WESTFIELD | 903C | — | Yes |
| 281-952 | HOUSTON | 6630 | — | — |
| 281-953 | HOUSTON | 903C | — | — |
| 281-954 | APOLLO | 829J | — | Yes |
| 281-955 | SATSUMA | 9533 | — | — |
| 281-956 | APOLLO | 903C | — | Yes |
| 281-957 | KEMAH | 6114 | — | Yes |
| 281-958 | — | — | ||
| 281-959 | — | — | ||
| 281-960 | HSTNSUBURB | 5562 | — | Yes |
| 281-961 | LANGHAMCRK | 6506 | — | — |
| 281-962 | SHELDON | 7239 | — | Yes |
| 281-963 | HOUSTON | 6630 | — | — |
| 281-964 | HUMBLE | 2114 | — | Yes |
| 281-965 | HSTNSUBURB | 6701 | — | Yes |
| 281-966 | HSTNSUBURB | 9533 | — | Yes |
| 281-967 | DICKINSON | 6506 | 2014-02-26 | Yes |
| 281-968 | ALVIN | 6114 | — | Yes |
| 281-969 | STAFFORD | 7239 | — | Yes |
| 281-970 | SATSUMA | 9533 | — | — |
| 281-971 | HSTNSUBURB | 6114 | — | Yes |
| 281-972 | ARCOLA | 7670 | — | Yes |
| 281-973 | HUMBLE | 6114 | — | Yes |
| 281-974 | HOUSTON | 6506 | — | Yes |
| 281-975 | BAMMEL | 6114 | — | Yes |
| 281-976 | — | — | ||
| 281-977 | HSTNSUBURB | 671J | — | Yes |
| 281-978 | HSTNSUBURB | 9533 | — | Yes |
| 281-979 | HOUSTON | 6506 | 2007-10-16 | Yes |
| 281-980 | SUGAR LAND | 2147 | — | — |
| 281-981 | HOUSTON | 6630 | — | — |
| 281-982 | WESTFIELD | 7239 | — | Yes |
| 281-983 | HSTNSUBURB | 9533 | — | — |
| 281-984 | APOLLO | 903C | — | Yes |
| 281-985 | HSTNSUBURB | 9533 | — | Yes |
| 281-986 | HSTNSUBURB | 9533 | — | Yes |
| 281-987 | HSTNSUBURB | 9533 | — | Yes |
| 281-988 | HSTNSUBURB | 9533 | — | — |
| 281-989 | HOUSTON | 5562 | — | Yes |
| 281-990 | APOLLO | 9533 | — | Yes |
| 281-991 | HSTNSUBURB | 9533 | — | — |
| 281-992 | FRIENDSWD | 9533 | — | Yes |
| 281-993 | FRIENDSWD | 9533 | — | Yes |
| 281-994 | BARKER | 7074 | — | Yes |
| 281-995 | HOUSTON | 5562 | 2007-06-26 | Yes |
| 281-996 | FRIENDSWD | 9533 | — | — |
| 281-997 | HSTNSUBURB | 9533 | — | — |
| 281-998 | HSTNSUBURB | 9533 | — | — |
| 281-999 | HSTNSUBURB | 9533 | — | — |
These are initial assignees from NANPA CO-code records — because of number portability, the current serving carrier of individual numbers may differ. Bulk export requires a membership.